Integrator



Dec. 26, 1944.

J. L. CHRISTMANN INTEGRATOR '7 Sheets-Sheet l Filed June 30, --1943 HTTOK/UEY,

De@ 2.6, 1944- J. LfcHRlsTMANN v 2,355,937

INTEGRATOR Fil-ed June 30, 1945 '7 Sheets-Sheet 2 l lullllulllllnlnllnlmn Dec. 26, 19.44. .1. L. CHRISTMANN INTEGRATOR Filed June 50, 1943 7 She'ets-Sheet 5 INVENTOR. l/'oH/v ou/5 HRISTMHNN HTTORA/ y,

Dec. 2.6, 1944. J. 1 CHRISTMANN INTEGRATOR 7 Sheets-Shee; 4

Filed June 30, 1943 INVENTOR. L/BHA/ Lau/5 CHR/www #wom/gy,

Dec. 26, 1944. J. 1 CHRISTMANN 2,365,937

INTEGRATOR Filed June 30, 1943 '7 Sheets-Sheet 5 Eg. i?

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- covering these two types of impulses.

Patented Dec. 26, 1944 UNITED STATES PATENT OFFICE INTEGRATOR John`Louis Christmann, Passaic, N. J.

Application June 30, 1943, Serial No. 492,976kd 7 Claims. -(CL. 23S- 61) This invention relates to new and useful improvements in an integrating means, and has more particular reference to an integrating mechanism adapted to continuously integrate the product of two vvariables and to register Vthe result on a counter. One use for the integrating means would be to totalize continuously the weight of material carried by a conveyor.

It is proposed to characterize the new integrating means by primary means including a movable member for sending out variable impulses, primary means including a movable member for transmitting motion, an integrator disc engageable with said second-named movable lmember tol be driven thereby, means for engaging said disc and second movable member controlled by said impulses, a counter connected to and driven by said integrator disc, a source of constant speed rotations for driving one of said members, proportional means working in proportion to one of said variables for controlling one of said primary means, and proportional means working in proportion to the other of said variables for controlling the other of said primary means.

The primary means referred to in the previous l.aragraph were' labeled primary means for the purpose of distinguishing them from the other means in said paragraph, The variable impulses referred to above may be of several types. Each type may be embodied in another modified form of this invention. For example, the variable impulses may be of constant frequencies but of variable lengths, or they may be of variable frei quencies and of constant lengths. Two forms of the invention are disclosed in this specification The invention contemplates using cams as the movable members for controlling the impulses, but otherv adequate means might be used for the generation of above mentioned impulses.

The movable member in the primary means for transmitting motion referred to above, in

each form of the invention, comprises a rotative table. In one form of the invention the source of constant speed rotation drives this table at a constant speed. In the other form of the invention the source of constant speed rotations ,drives the movable member which controls the impulses, in which case the impulses are of constant frequency.

Each form of the invention makes use of an integrator disc engageable with the rotative table to be driven thereby. It is a feature of this invention that the integrator disc intermittently engages the driven rotative table and that the counter for registering the result of the integrated variables is directly driven by the integrator disc. By directly driven I mean that there is no need for a differential or other indirect mechanism. I may use a gear train which I consider as comprising one type of direct drive.

In the event that the integrating means is used to totalize continuously the weight of materials carried by a conveyor, the proportional meansl previously referred to working in proportion to one of said variables for controlling one of said primary means includes a scale beam of the pendulum type. The deflection of the scale beam will be in proportion to the load on the weigh section of the conveyor. This deflection may be used to control the impulses, as will be more fully understood from one form ofthis invention, or this deflection may be used to control the mechanical transmission of motion, as will appear from the other form of the invention disclosed.

When the integrating means is used to totalize continuously the weight of material carried by a conveyor; the speed of the conveyor is the other variable. In effect, the integrating means is continuously integrating a variable load traveling at a Variable speed. The speed of the conveyor may be used to proportionally control the impulses, which way is used in one of the disclosed forms of the invention, or to proportionally control the transmission of motion (making use of the table previously mentioned) which way is used in the other form ofthe invention disclosed. The intel means.

grating means working under these conditions will integrate the product of speed load (ft/min. lbs./ft.).

Another object of 'this invention resides in the provision of simple means by which the integrating means may be calibrated. In one form of the invention it is proposed to control the lengths of the impulses for Calibrating the integrating In the other form of the invention it is proposed to control the transmission of motion for calibrating the integrating means.

The invention also contemplates the provision of means for introducing lag in one of said proportional means or the other, to iron out large irregularities in one or the other of the two variables.

The invention further contemplates the use of electric impulses for the impulses referred to above. Furthermore, it is proposed that the means for engaging and disengaging the integrator disc with the rotative table be controlled by said electric impulses, preferably with the use of a solenoid and cooperative armature.

Still further the invention contemplates a novel construction of the elements of the integrating means and their mechanical relationship with each other. More specifically, it is proposed that the rotating table be located in a vertical plane and have a horizontal axle. It is proposed that the integrator disc be rotatively mounted on an integrator disc swing frame supported in a certain way with relation to said table.

Novel constructions are proposed for the impulse senders. Novel means is also proposed for moving said integrator disc swing frame away from the rotating table to move said integrator disc out of contact with the table between impulses.

Another object of the invention resides in constructing an integrating means or the type mentioned, which is relatively simple in construction and which may be manufactured and sold at a low cost.

For further comprehension of the invention, and of the objects and advantages thereof, reierence will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material patr of this disclosure:

Fig. 1 is a fragmentary schematic elevational vicw of a conveyor equipped with integrating means constructed in accordance with this invention.

Fig. 2 is a fragmentary enlarged plan view of the integrator, per se, looking in the direction of the line 2--2 of Fig. 1.

Fig. 3 is an elevational view of Fig. 2 looking in the direction of the line 3-3 thereof.

Fig. l is a side elevational view looking in the direction of. the line 4--4 of Fig. 3.

Fig. 5 is a transverse enlarged sectional view through the center of the table of Fig. 4 but illustrated with certain parts removed.

Fig. 6 is a fragmentary sectional view taken on the line 6--6 of Fig. 5.

Fig. 7 is a .fragmentary enlarged sectional view taken on the line 1-1 of Fig. 4.

Fig. 8 is a fragmentary enlarged detailed view of a portion of Fig. 3 showing particularly the integrator disc swing frame and the parts mounted thereon.

Fig. 9 is an enlarged horizontal sectional view taken on the line 9-9 of Fig. 8.

Fig. 10 is a fragmentary sectional view of a portion of Fig. 2 taken on the line lli-l0 thereof but disclosing merely a portion of the mechanical relay.

Fig. 11 is a fragmentary enlarged horizontal sectional view taken on the line I or Fig. 10.

Fig. 12 is a fragmentary vertical sectional view taken on the line |2|2 of Fig. 10.

Fig. 13 is a fragmentary horizontal sectional view taken on the line |3-|3 of Fig. 8.

Fig. 14 is a fragmentary enlarged elevational View of a portion of Fig. 1 illustrating the details of the impulse sender, but illustrated with the front cover removed.

Fig. 15 is a vertical sectional view taken on the line |5-l5 of Fig. 14 but illustrated with the front cover in position.

Fig. 16 is a fragmentary vertical sectional view taken on the line |6-|6 of Fig. 14.

Fig. 17 is a schematic wiring diagram of the device.

Fig. 18 is ar. elevational view of a conveyor equipped with integrating means constructed in accordance with another form of this invention.

Fig. 19 is a fragmentary enlarged detailed elevational view of the integrator shown in Fig. 18.

Fig. 20 is a vertical sectional view taken on the line 20-20 of Fig. 19.

Fig. 21 is a detailed plan view oi the impulse sender shown in Fig. 18, this view being taken taken-as though looking in the direction of the line 2|2| of Fis. 18.

Fig. 22 is a fragmentary enlarged vertical sectional view taken Yon the line 22-22 of Fig. 21.

Fig. 23 is a schematic wiring diagram of the second form of the invention.

The integrating means for continuously integrating two variables, such as a variable load traveling at a variable speed, in accordance with that form of the invention illustrated in Figs. 1 to 17 inclusive, is shown applied to a conveyor 25 having a conveyor belt 26 for carrying a variable load, which conveyor belt may travel at a variable speed. The conveyor belt 26 has a weigh section 21 which includes idlerrollers 29 mounted upon a frame 29 which is supported at one end with a fulcrum |15 and which has its other end supported by a. suspension rod |18. This rod |16 is connected between the ends of a lever |11 which is pivotally supported at one end by the support means |18 and which has its other end connected with a rod |19 which is connected with one end of the scale beam 30 which is provided with the pendulum 3|.

The conveyor belt 26 is supported by additional rollers 28 which are located outside of the conveyor weigh section 21. An adjustable link 32 with universal joints |80 at its ends connects the pendulum 3| with a swivel arm 33 of a mechanical relay of the integrator, as will hereinafter be more fully described. The integrator includes a frame 35 having side walls 36, a front '40 wall 31, and a base wall 38. A mounting plate 39 is supported upon the frame 35 by lugs and fastening elements 39'. This mounting plate 39 rotatively supports a disc-like table 40 and a drive system for rotating this table. in the nature of a Vertical disc located to the iront of the front wall 31 and mounted upon a horizontal shaft 4| which is rotatively supported by ball bearings 42 upon a tubular member 43 mounted on the mounting plate 39.

The shaft 4| is provided with a gear 44 back of the front wall 31 and meshing with a pinion 45 on a countershaft 46 rotatively supported by ball bearings 41 mounted on the tubular member 49, which is also mounted on and through the mounting plate 39. The shaft 46 is also provided with a gear 49 in front of the front wall 31 which in turn meshes with a pinion 50 mounted on the shaft of a. self-starting synchronous induction motor 5| which is also mounted on the mounting plate 39. The construction is such that the synchronous induction motor 5|, when operating, will drive the table 40 at a'constant speed.

A mechanical relay is mounted on the top portion of the frame 35. This relay includes a relay carriage 52 provided with a pair of spaced grooved rollers 53 mounted on a track 54 xedly mounted on the top portion of the front wall 31. of the integrator frame 35. The back portion of the relay carriage 52 is formed with a vertical tubular portion 55 equipped with ball bearings 56 supporting a vertical swivel shaft 51 on the bottom end of which the said swivel arm 33 is mounted. This swivel arm 33 has a front hollow portion 58 in which a disc 59 is rotatively supported by The table 40 is the ball bearings 60 mounted on the shaft 9|, in turn mounted across the side walls of the hollowfront portion 58. The grooved rollers 53 are rotatively mounted by ball bearings 62 upon a pair of spaced xedly mounted studs 63 projecting from the front of the relay carriage 52. A front bar 64 is mounted across the front ends of the studs 93.

A horizontal stud 65 projects from the said front bar 6i and swivelly supports a block 66. in integrator disc swing frame 61 is provided with a top pair of pivot studs 68 engaging the opposite sides of the block 66. lThe integrator disc swing frame 61 extends vertically and across the front of the table 40. The studs 69 serve to pivotally support the integrator disc swing frame S1 so that it may pivot towards and away from the table 60. Since the block G is turnably mounted on the stud 65, the swing'frame s1 may also swing in a plane parallel to the table 40.

The disc 59 of the mechanical relay rests upon a mechanical relay rubber covered drum 69 which is rotatively supported between said side walls 36 ci the frame 35. The drum 69 is connected up with a motorl 'i0 of the geared head shaded pole type. This motor is supported on a mounting plate "iisupported by the arms 12 on a bracket.

lil mounted on the outer side of one of the walls 36. The shaft oi the motor is provided with a pinion 14 which meshes with a gear 15 rotative ly mounted on the mounting plate 1| and provided with a pinion 16 meshing with a gear 'il mounted on a shaft 18 connectedwith one end of the drum t9. The construction is such that the motor 'l0 drives the rubber covered drum 69, which in turn drives the disc 59, which 'i will hereafter reier to as a swivel disc because it is indirectly mounted on the swivel shaft 51 and swivels when the arm 33 is moved.

sin integrator disc 19 is rotatively mounted on said 4:integrator disc swing :frame 6l and nor.- mally-has a point on its periphery adjacent a zero or starting point on the tabe d0. As illustrated on the drawings this "zero or starting point coincides with the axis of rotation of the table t0. The integrator disc i9 has a hub portion 00 rotatively mounted by ball bearings 9i upon a shaft 92 xedly mounted across the sides oi4 the swing frame 0l. The integrator disc 'i9 is also provided with a hard rubber tire portion 83 which is held in position by a collar 84 xedly mounted on the huh 80 with a set screw 85. The tire portion 90 is adapted to engage the table t0 for receiving rotations therefrom.

A counter 39 is connected to and is driven by the rotations of the integrator disc 19. More particularly, a counter drive gear 8d is fixedly connected with the hub 00 and meshes with a gear 0l mounted onthe shaft of said master totalizing counter 98 which is fixedly mounted on the swing frame y51. The gear 81 is provided with a Vernier hub 99 preferably graduated into 100 divisions for cooperation with the counter d8 by which it is possible to accurately read fractions indicated by the counter t8.

An adjustable counterweight 90 is mounted on the top of the swing frame 61 by which the swing frame and Jthe various parts mounted thereon may be delicately balanced. This adjustable counterbalance weight 90 is threadedly engaged on a screw 9| mounted on the top of the swing frame 61. Normally, the swing frame 91 assumes a position in which the integrator disc 19 is out of contact with the table 00. It is resiliently urged and held in this position by a v hinge arm 92 which is pivotally mounted on a rod 93 mounted across the sides of the swing frame 61. The hinged arm 92 has a pair of downwardly directed ngers 94 positioned to the sides of the swing frame 61. Horizontal rods 95 are mounted on the bottom ends of the fingers 94 and extend towards a stationary plate 90 mounted across the front of the front Wall 31o! the integrator plate 35 by the lug and fastening elements 96'. The free ends of each of the rods 95 support small steel'balls 91 which normally rest against the plate 90. The plate 96 is in the nature of a stationary solenoid armature and is cooperative with a solenoid 98 supported on the swing frame 61.

The-solenoid 98 is clamped by a pair of side bars 99 held on the frame 61 by the bolts |00. A bar @0| (see Figs. 4, 8 and 13) is mounted across the sides of the swing frame 61 and supports a projecting stud |02 which passes through an opening |03 in the hinged arm 92. This stud |02 has several nuts i0# threadedly mounted on its outer end. A spring |05 acts between the hinged arm 82 and the washer |06 mounted on the stud W2 and engaging against the innermost nut itil. 'li'hisspring |05 acts to normally urge the swing frame 6l slightly forwards so that 'the integrator disc i9 is out of contact with the table lill. When the solenoid is energized it moves towards the stationary core 9B correspondingly moving the swing frame $1 for engaging the integrator disc i9 against the table 60.

The integrating means also includes proportional Irequency impulse means for producing im pulses numerically in proportion to the speed of the conveyor belt 26 and said impulses being of constant lengths. This means includes a casing im' stationarily supported in relation with the conveyor 25 and provided with a removable iront cover idd. This cover is releasably held in positiopwith several swing studs i'iil provided with wing nuts H0. A gasket iii is mounted around the edge of the casing i0? and is held in position on the edge portion of the casing by a stationary Strip H2.

"Within the casing |01 there is a mounting plate i i3 mounted on the back wall of the casing. @ne oi the rollers oi the conveyor 25 or a conveyor pulley i0! is provided-with a sprocket im engaged by an endless chain H5 engaging over a sprocket-l ||6 mounted on a shaft rotatively mounted within a bushing H8 extended through the back wall of the casing |01 and mounted on the mounting plate M3. The inner end of the shaft ill' is provided with a gear H9 which meshes with a gear |20 rotatively mounted on the mounting plate H3. This gear |20 is provided with a cam i2! having a single cam projection |22. This cam projectionl 422 is adapted to engage against the roller |23 of a switch arm @2d of a normally open micro-switch |25. This micro-switch 625 is mounted on a bracket which is adjustably clamped on a stud |2'i mounted on the mounting plate H3. When the cam |2i rotates the projection 22 will strike the roller |232,

depressing the lever |24 and closing the microswitch. It is pointed out that the speed of rotation of the cam |2| will be in proportion to the speed of the conveyor belt 26, and consequently the micro-switch |25 will be operated in proportion to the speed of the conveyor belt 26.

Attention is now directed to the schematic elec- .tric wiring diagram of the device illustrated in Fig. 17. The supply circuit is indicated by the .reference letters L I and L2. The micro-switch |28 is connected in circuit |33 connected in parallel with the supply circuit and controls a normally closed inertia relay |30. This relay has a coil |3| which when energized opens the switch portion |32 with a slight delay. The switch portion |32 is connected in series in said circuit |33 which includes and controls an adjustable time delay relay |34. This adjustable time delay relay is of the type in which the contacts close instantly and open with delay, depending upon the adjustment thereof. The coil |3| oi' the relay |30 is in a circuit |35 shunting the relay switch' |32. The time delay relay |34 controls circuit |33 connected in parallel with the supply circuit Li, L2. This circuit .|235 includes in series the said solenoid 38. It also includes in series a normally closed .limit switch |31 This limit switch ili'i is operated oy the mechanical relay of the integrating means. It is mounted on the track t see Fics and. 3) when the carriage 52 is in. its starting,r position, corresponding with no load on the conveyor weigh section 2l, one of the grooved wheelslil engages the normally closed limit switch i374 holdingr open, A manually operable switch |33 is connected in a circuit which shunts the normally closed limit switch ifi and is for the purpose oi regulating the integrator, for the balance or noI load position, as will be hereafter more Sully described. The schematic wiring' diagram also dis closes the circuits 38 and itil in parallel with the supply circuit Ll, L2 for the self starting syrichronous induction motor 5i, and the motor 'lli of the mechanical relay.

The relay itil is a standard commercial relay of the type in which the contacts instantly close and open with delay for a time interval selected according 'to the adjustment of the relay. For example, we may use the relay disclosed in U. Si. patent to C. L. Anderson No. 2,175,1955, granted ctoher lo, 1933 and issued to Eagle Signal Corp. of Moline, illinois, assignee.

The operation form or the invention is as follows:

The conveyor belt 26 is a section or" en endless conveyor and continuously works, carrying a load ot articles or material. When these articles or material pass the conveyor weigh section 27 the pendulum 3l oi the pendulum type beam 30 will be deflected in directJ proportion to the weight on the weigh section The pendulum 3| will transmit the' motion via the adjustable link 32 to the swivel disc arm 33 of the mechanical relay.

This mechanicalrelay may he recognized by notint; its pertinent parts which, besides the swivel disc arm 33, includes the electric motor driven rubber covered drum 33 upon which the disc 59 of the swivel disc arm 33 rests. The mechanical relay also includes the carriage 32 guided by wheels 53 on the track 51% and indirectly supportins the stud Normally, the carriage 52 is in a .starting position, as illustrated in Figs. 2 and 3, in which one of the wheels of the carriage 52 engages against the limit switch i3?. When the parts are in this condition the swivel disc arm 33 is projecting rearwarcs et right angles to the axis of the rubber covered drum 53. At this moment the weight upon the conveyor weigh section 2l is zero. When some weight comes along and reaches and is carried across the weigh section 2l' the beam 30 will be deiiected and will indirectly cause the swivel disc arm 33 to be swiveled on the swivel i shaft 5l. This tilts the disc 59 in proportion to the amount that the swivel disc arm 33 is moved. When the disc 59 is tilted at an angle to the axis vri'iotor 5 l of the rubber covered drum B9, the rubber covered drum 88 will drive the wheel 59 along its length until it rea/ches a new position in which it and the swivel disc arm 33 are again at right angles to the axis of the rubber covered drum 89. The lateral motion of the wheel 59 correspondingly moves the carriage 52. This mechanism is referred to as a mechanical relay because it iollows the proportional motion of the pendulum 3i oi' the beam 30 and does this smoothly, ironing out any sudden changes of the load on the weigh section 2l.

When the carriage 52 was at its starting position the integrator disc i9 was located at its zero or starting position, which in accordance with Fig. 3, corresponds with the axis ci the table l0. When the integrator disc T9 is at this "zero position it does not contact with the table til be cause the limit switch |31 is open. This breaks the circuit |35 through the solenoid 9E and there :tore the spring |05 holds the integrator disc swivel frame 67 forwards so that the integrator disc 'i3 is out of contact with the table 60. luhiw'n ever, as soon as the carriage 52 moves away from its cero position it carries along the integrator disc swing frame 61 so that the integrator disc ill is now moving radially away from the center `ol' the table will. The table 40 is being rotated at e. constant speed by the synchronous induction It is pointed ovt that should the in tegrator disc 'I9 now be eiuased against the table ill, the table 40 will impart rotations to the disc 19 which will transmit these rotations to the master totalizing counter 33. The mechanism just described for moving the carriage o2 from its zero position, essel'itiallyV comprises proportional deflection means for moving: the :integrator disc swing frame 6l in a direction to move the integrator disc 19 radially of the center of rotation of the table 4D in proportion to the load variable on the conveyor weich section 2l.

The integrating means for continuously iutegrating a variable load travelingf at c, variable speed, or integrating two other types of variables, includes proportional frequency impulse means for producing impulses numerically in proportion to the speed variable, said impulses being of constant lengths, for moving the disc frame El in a direction to move said integrator disc 19 against said table 40 for and during each impulse, This proportional frequency impulse means may be traced from the pulley |8| of the conveyor Rotations from this pulley ll are indirectly transmitted to drive the cam |2| by the chain liti. This cam |2i will be rotated in direct proportion to the speed of the conveyor belt 2li. Each rotation of the cam |2| will cause the projection 22 to move the lever |24 normally closing the normally open micro-impulse sender switch |25. Each time the switch |25 is closed the coil |3i of the normally closed inertia relay |3 will become energized so that the switch |32 of the relay opens., However, this switch |32 opens with slight delay. During this delay period the circuit |33 'to 'the adjustable time relay |34 is closed. When switch 25 opens, the contacts of relay |30 close again, but the circuit |33 remains open because switch |25 is now open. Ir" cam l should stop with switch |25 closed, relay |30 stays energized, its contacts remain open, and circuit |33 remains open.

The relay |34 is a standard commercial relay which may be purchased on the market and is of the type in which the contacts instantly close and open with delay, according to the adiustment of the relay. This delay may be anywhere from a fraction of a second, upwards. The purpose of having the relay |34 adjustable is to make it possible to calibrate the integrator. The impulses released by the relay |34 will control the circuit |35 which includes the solenoid 98'.

For each impulse, the solenoid 98 becomes energized and will be attracted to the solenoid armature 96, causing the integrator disc swing frame 31 to move towards the table 40 so that the integrator disc 19 engages the table 40 and receives rotative motion therefrom. As soon as the impulse ceases, the spring will immediately move the swing frame 61 to disengage the integrator disc 19 from the table 40.

It should now be recognized that the integrating means is continuously integrating a variable load traveling at a variable speed. The variable load indirectly causes the integrator disc vswing :trame 81 to assume various positions in which the integrator disc 19 is in various radial positions from the axis of rotation of the table 40, these positions being proportional to the pendulum deflections. The table imparts therefore, upon contact with the integrator disc 19, rotative motion to the latter,l also in proportion to the pendulum deflection. Simultaneously, the proportional frequency impulse means operating indirectly through the medium of the pulley IBI driving the cam lil of the impulse sender, operates the solenoid 98 which causes the integrator disc swing frame 51 to engage the integrator disc 19 against the table for each impulse. In this' way the integrator disc 'i9 is integrating the two variables, which are totalized by the counter 88.

l'n Figs. 18-23 inclusive another form of integrating :means is disclosed which operates on substantially the identical principle. In this form of the invention there is a conveyor 25 which may work at a variable speed and which carries a variable load past the conveyor weigh section 21. rI'his conveyor weigh section 21 is provided with a beam type weighing device which includes the pendulum 3| connected with an adjustable link,

32 operating the swivel disc arm 33 of a mechanical relay. This mechanical relay includes the carriage 52. It should be noted that up to this point the device is substantially identical in construction to the corresponding portion of the prior device. For this reason further details thereof will not be given, but identical parts have been indicated by like reference numerals.

The modified form of the invention now distinguishes from the prior form in the fact that a normally open micro-switch is indirectly mounted on the carriage 52, see Fig. 2l. More particularly, it is mounted on the bar Bd of the carriage 52. This switch 50 has an operator arm |5| provided` with a roller |52 which rests on a movable member |53. This movable member |53 is in the nature of a cylinder. it is rotatively axially supported by the bearings 654. The cylinder is provided with a triangular shaped cam G55 which has an apex portion at one end of the cylinder |53 and has its sides gradually diverging "from this apex portion. The cam |55 is in the nature of a raised portion on one side of the cylinder |53. The cylinder |53 is connected up with a transmission |56 driven by a self-starting synchronous induction motor 5|.

It should be recognized that up to this point we have described a proportional means working in proportion to one of said variables, namely, the load variable, which controls an impulse sender. As illustrated in Fig. 21, the carriage 52 of the mechanical relay is at its "zero or starting position. Similarly, the wheel |52 of the normally open micro-switch impulse sender |50 is just adjacent the apex of the cam |55 so that the switch is open and no impulses are being sent, even though the cylinder |53 is rotating continuously at a constant speed. However, when a load passes the conveyor weigh section 21, the mechanical relay will be operated and will indirectly cause the carriage 52 to move away from `the zero or starting position in proportion to the load on the Weigh section 21. When the carriage 52 moves as stated. it carries along the switch |50 with its operator arm |5| and roller |52. Now the operator arm |5| will be raised for each rotation of the cylinder |53, and the length of time that the arm is raised will depend upon its position along the cam |55. It should be noted that we are now capable oi sending constant frequency impulses of variable lengths in proportion to the load variable.

'I'he normally open micro-switch impulse sender |50 is arranged in a parallel circuit (see Fig. 23) inthe supply circuit Li, L2 which includes the solenoid 98 in series. The solenoid 98 is mounted upon an integrator disc swing frame 61'. This integrator disc swing frame 51' is pivotally supported at its top and freely depends. It is plvotally supported by the studs 68 which engage opposite sides of a block |58. This block l 58 is slidably mounted upon the frame 38' oi? the integrator. A' rotatively mounted screw |55 threadedly engages the block |58. This screw is provided with a knob |60. The integrator disc swing frame 61 supports the integrator disc 'i9 which is indirectly. connected with the master totalizing Vcounter 88 mounted on the frame t1. The integrator disc 19 is immediately adjacent the table `40 which is disposed in a vertical position and fixed upon a horizontal shaft 4|. This horizontal shaft 4| is rotatively supported on the frame 38'. it is provided with a sprocket |52 which is engaged by a chain M5 connected with the pulley |8l of the conveyor 25.

lin other respects this form of the invention is identical to the previous form yand like parts have been indicated by like reference numerals.

It should be noted that the table 40 will be driven in direct proportion to the speed of the conveyor belt 20 of conveyor 25. This constitutes one of the variables. As already pointed out, the other variable, that is, the load, controls the impulses which are of constant frequency but of variable lengths.

The operation of this form of the invention is as follows:

The load variable, that is, the load passing the conveyor weigh section 21 will operate the mechanical relay to indirectly move the carriage 52 of the relay for indirectly moving the normally open micro-switch |50 along the cam |55 for sending out impulses in proportion to the load.

These impulses will operate the solenoid 98 which will be attracted to the armature 96 and will cause the integrator disc 19 to engage the rotating table 50. The engagement ofthe integrator radial position of the integrator disc 19 with relation to the axis of rotation of the table 40. Once this adjustment has been properly made it is not necessary to disturb it.

In order to better understand the invention ce1'- tain similarities between the two disclosed iorms thereof will now be pointed out. It should be noted that both integrating means are continuously integrating two variables. Each integrating means has primary means which includes a movable member for sending out variable impulses. The movable member in the first disclosed form of the invention is the rotative cam I2 i. The movable member in the second disclosed form of the invention is the rotating cam I 55. In the first form of the invention the frequencies of the impulses are variable because the cam lili ls driven by the variable speed conveyor 25. However, the impulses are of identical lengths because of the time delay relay i3d. in the second form of the invention the impulses are of constant frequency, but of variable lengths because of the varying character oi the cam itil. This means was labeled primary so that it may be distinguished from subsequent means hereafter referred to.

Both integrating means have another primary means which includes a movable member for transmitting motion. This movable member is the table 4b, in each of the forms of the invention. rl"his movable member w transmits motion to the integrator disc 19. This means is also labeled "prlmary merely to distinguish it from means hereafter referred to. Each of the two forms oi integrating means has an integrator disc 'H9 which is engageable with the secondnamed movable member, that is, the rotative table 40, to be driven `thereby. Each of the two forms of integrating means have means for engasing and disengaging said integrator disc la and said second movable member (table tbl and this means is controlled by said impulses. it should be noted that in each form ci the invenn tion the impulses are sent to the solenoid 9d which indirectly moves the integrator disc frame to engage or disengage the integrator disc 'it from the table Ml. Each form of the invention is pro vided with a totalizing counter ad connected 'to and driven by the integrator disc t9. Each form of the invention has a source of constant speedrotations. In the first form of the invention it is the synchronous induction motor 5l indirectly driving the table d at a constant speed. In the second form of the invention it is the synchron nous induction motor I driving the cam V55 at a constant speed.

Each form of the invention also hasproportional means working in proportion to one of the variables for controlling one or said primary means just mentioned above. Each integrator also is provided with proportional means working in proportion to the other of said variables forcontrolling the other of said primary means. it is believed that this will be obvious from the previous portions of this specication.

While I have illustrated and described the pre-u ferred embodiments of my invention, it is to be understood that I do` not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming Within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by United States Letters Patent is:

1. Integrating means for continuously integrating a variable load traveling at a variable speed, comprising a constant speed rotating table, a. disc frame extending" across said table, an integrator disc rotatively mounted on said disc frame and normally having a point on its periphery adiaceni; a zero or starting point on said table, a counter connected to and driven by rotations of said disc, proportional deflection means for movins said disc frame in a direction to move said integrator disc radially oi' the center of rotation of said table in proportion to said load variable, proportional frequency constant length impulse means for producing impulses of constant length numerically in proportion to said speed variable for moving said disc frame in a direction to move said integrator disc against said table for and during each impulse, and means for moving said disc frame in a direction to move said integrator disc out of contact with said table between said impulses.

2. Integrating means for continuously integrating a variable load traveling at a variable speed, comprising a constant speed rotating table, a disc frame extending across said table, an integrator disc rotatively mounted on said disc frame and normally having a point on its periphery adja-n cent a zero or starting point on said table, a counter connected to and driven by rotations ci said disc, proportional deiieotion means for moving said disc frame in a direction to move said integrator disc radially oi? the center of rotation of said table in proportion to said load variable, proportional frequency constant length means for producing impulses of constant length numericaln ly in proportion to said speed variable for moving said disc frame in a direction to move said integrator disc against said table ier and during each impulse, means for moving said disc frame in a direction to move said integrator disc out of contact with said table between said impulses, and means for interrupting and discontinuing the sending of said impulses when said integrator disc is at said zero position.

3. Integrating means for continuously integran ing a variable load traveling at a variable speed. comprising a constant speed rotating table, a disc frame extending across said table, an integrator disc rctatively mounted on said disc frame and normally having a point on its periphery adjacent a zero or starting point on said table, a counter connected to and driven by rotations oi said disc, proportional deflection means for moltn ing said disc frame in a direction to move said integrator disc radially of the center of rotation of said table in proportion to said load variable, proportional frequency constant length impulse means for producing impulses of constant length numerically in proportion to said speed variable for moving.T said disc frame in a direction to move said integrator disc against said table io'r and during each impulse, means for moving said disc frame in a direction to move said integrator disc out oi contact with said table between said im pulses, and means for adjusting the length oi the impulses sent out by said constant length impulse means for the calibration of said integrating means.

fi. Integrating means for continuously integrating a variable load traveling at a variable speed, comprising a frame, a Vertical table having a horizontal shaft rotatively mounted on said frame, means for rotating said shaft at a constant speed, a carriage horizontally slidably mounted on said frame and above said table to move across said table, an integrator disc swing frame swingingly and pivotallv depending from said carriage to move across said table and towards and away from said table, an integration disc rotatively mounted on said frame and normally having a point onV its periphery adjacent a zero or starting point on' said table, a counter connected to and driven by the rotations of said disc, proportional :'deiiection' means for moving said carriage across said table for moving said disc swing frame in a direction to move said integrator disc radially of the center of rotation of said table in proportion to said load variable, proportional frequency constant length impulse means for producing constant length impulses numerically in proportion to said speed variable for moving said disc swing frame towards said table for and during each impulse, and means for moving said disc frame away from said table to move said integrator disc out o! contact with said comprising a frame, a vertical table having a horizontal shaft rotatively mounted on said frame, means for rotating said shaft at a constant speed, a carriage horizontally siidably mounted on said frame and above said table to move across said table, an integrator disc swingframe swingingly and pivotally depending 'from said carriage to move across said table and towards and away from said table, an integration disc rotatively mounted onsaid frame and normally having a point on its periphery adjacent a aero or starting point on said'table, a counter connected to and driven by the rotations of said disc, proportional deiiection means for moving said carnage across said table for moving said discswingframeinadirectiontomovesaid integrator disc radially ofthe center oi rotation of said table in proportion to said load variable, Proportional frequency constant length impulse means for producing constant length impulses numerically in proportion to said speed variable for moving said disc swing trame towards said table to move said integrator disc against said table for and during each impulse,- and means for moving said disc frame away trom said table to move said integrator disc out oi' contact with said table between said impulses, said impulse means including a solenoid mounted on said swing trame and cooperative with a solenoid 'armature mounted ou said ilrst named frame.

6. Integrating means tor continuously integratv ing a variable load'traveling at a variable speed,

comprising a frame. a vertical table having a horizontal shaft rotatively mounted on said frame, means tor rotating said shaft at a constant speed, a carriage horizontally siidably mounted on said trame and above said table to move across said table, an integrator disc swing trame swingvingly and pivotally depending from said carriage f and driven by the rotations or said disc, propor tional deilection means tor moving said carriage across said table for moving said disc swing frame in a direction to move said integrator disc radially of the center of rotation of said table in proportion to said load variable, proportional frequency constant length impulse means for producing constant length impulses numerically in proporl'tion to said speed variable for moving said disc swing frame towards said table to move said inte stator disc against said table for and during each impulse, and means for moving said disc frame away from said table to move said integrator disc out of contact with said table between said impulses, said impulse means including a solenoid mounted on said swing frame and cooperative with a solenoid armature mounted on said ilrst named fmme, and a normally open switch impulse sender controlling a normally closed inertia relay of the type which when energized will have its contacts open with slight delay, and said relay controlling an adjustable time delay relay of the type in which the contacts close instantly and open with delay, and said delay relay controlling electric impulses to said solenoid.

7. Integrating means for continuously integrating a variable load traveling at a variable speed, comprising a frame, a vertical table having a horizontal shaft rotatively mounted on said frame, means for rotating said shaft at a constant speed. a carriage horizontally siidably mounted on said frame and above said table to move across said table. an integrator disc swing frame swingingly and pivotally depending from said carriage to move across said table and towards and away imm said table, an integration disc rotatlvely mounted on said frame and normally having a point on its periphery adjacent a zero" or starting point on said table, a counter connected to and driven by the rotations of said disc, proportional deection means for moving said carriage across said table for moving said disc swing trame in a direction to move said integrator disc radlally of the center of rotation of said table in proportion to said load variable, proportional freouency constant length impulse means for producing constant length impulses numerically in proportion to said speed variable for moving said disc swing frame towards said table to move said integrator disc against said table for and during each impulse, and means for moving said disc frame away from said table to move said integrator disc out of contact with said table between said impulses, said impulse means including a solenoid moimted on said swing frame and cooperative with a solenoid armature mounted on said Anrst named frame. and a normally open switch impulse sender controlling a normally closed inertia relay of the type which when energized will have its contacts open with slight delay, and said relay controlling .an adjustable time delay relay ofthe type in which the contacts close in stantly and open with delay, and said delay relay controlling electric impulses to said solenoid, and a normally closed limit switch for breaking the circuit to'said solenoid when said integrator disc is at the zero position on said table.

JOHN LOUIS CHRIBTMANN. 

